# PyPy Configuration[translation.type_system]

PyPy Configuration[translation.type_system]
general documentation config index command-line overview

# translation.type_system

Contents

- Basic Option Information
- Description

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# Basic Option Information

- name: type_system
- description: Type system to use when RTyping
- option type: choice option
- possible values:
  - lltype
  - ootype
- requirements:
  - value 'ootype' requires:
    - translation.backendopt.raisingop2direct_call to be set to 'False'
    - translation.backendopt.constfold to be set to 'False'
    - translation.backendopt.heap2stack to be set to 'False'
    - translation.backendopt.clever_malloc_removal to be set to 'False'

# Description

Which type system to use when rtyping. This option should not be set explicitely.